Burn appeared as an ability in the original Final Fantasy XIV. At the initial release, Burn was a spell learned by Conjurers at rank 12. The ability inflicted fire-elemental damage over time and also reduced fire magic defense to all enemies within an area of effect.

In addition, an upgraded version called Burn II also appeared as an ability in the game. The spell could be learned by Conjurers at rank 36. The ability inflicted fire-elemental damage over time at a higher potency and also reduced the fire magic defense to all enemies within an area of effect.

After the release of patch 1.20, Burn and Burn II became unusable by any class in the game.